Patents by Inventor Toshiyuki Kato

Toshiyuki Kato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11195439
    Abstract: The present invention provides a head-up display apparatus capable of properly presenting information to a wide area. A head-up display apparatus includes: an image light output unit configured to output a first image display light formed by a visible light laser and a second image display light formed by an ultraviolet light laser; a screen that diffuses and transmits the first image display light, and transmits the second image display light without diffusing the second image display light; and a mirror that reflects the first and the second image display lights transmitted through the screen towards a windshield that presents a virtual image to a user by reflecting the visible light laser and presents a real image to the user by receiving the ultraviolet light laser and emitting light by itself.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: December 7, 2021
    Assignee: JVCKENWOOD CORPORATION
    Inventor: Toshiyuki Kato
  • Patent number: 11107403
    Abstract: A current limiting circuit includes: a gain calculation circuit which calculates a screen power value based on pixel values and calculates a gain based on the screen power value; and a gain multiplication circuit which multiplies the pixel values by the gain, and when a maximum value of the pixel values exceeds a first threshold value, the gain calculation circuit calculates the screen power value by use of a common pixel value greater than or equal to the maximum value instead of the pixel values, and when the screen power value exceeds a control target power value, the gain calculation circuit sets the gain to a ratio of the control target power value with respect to the screen power value, and when the screen power value is less than or equal to the control target power value, the gain calculation circuit sets the gain to 1.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: August 31, 2021
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 11100859
    Abstract: A processing circuit processes video signals for a display device which includes a display panel including pixels each having a self light emitting element and a current limiting circuit limiting a current to the pixels. The processing circuit includes: a frame memory storing video signals of a previous frame; and a signal processer which: compares a luminance represented by a video signal of the current frame corresponding to a pixel and a luminance represented by a video signal of the previous frame corresponding to the pixel; outputs the video signal of the current frame in a case where the luminance represented by the video signal of the current frame is equal to or smaller than the luminance represented by the video signal of the previous frame or equal to or smaller than a predetermined threshold value; and outputs a weighted average of the video signal of the current frame and the video signal of the previous frame in any other case.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 24, 2021
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Publication number: 20210090499
    Abstract: A current limiting circuit includes: a gain calculation circuit which calculates a screen power value based on pixel values and calculates a gain based on the screen power value; and a gain multiplication circuit which multiplies the pixel values by the gain, and when a maximum value of the pixel values exceeds a first threshold value, the gain calculation circuit calculates the screen power value by use of a common pixel value greater than or equal to the maximum value instead of the pixel values, and when the screen power value exceeds a control target power value, the gain calculation circuit sets the gain to a ratio of the control target power value with respect to the screen power value, and when the screen power value is less than or equal to the control target power value, the gain calculation circuit sets the gain to 1.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 25, 2021
    Applicant: JOLED INC.
    Inventor: Toshiyuki KATO
  • Publication number: 20200388200
    Abstract: The present invention provides a head-up display apparatus capable of properly presenting information to a wide area. A head-up display apparatus includes: an image light output unit configured to output a first image display light formed by a visible light laser and a second image display light formed by an ultraviolet light laser; a screen that diffuses and transmits the first image display light, and transmits the second image display light without diffusing the second image display light; and a mirror that reflects the first and the second image display lights transmitted through the screen towards a windshield that presents a virtual image to a user by reflecting the visible light laser and presents a real image to the user by receiving the ultraviolet light laser and emitting light by itself.
    Type: Application
    Filed: August 24, 2020
    Publication date: December 10, 2020
    Inventor: Toshiyuki KATO
  • Publication number: 20200279528
    Abstract: A processing circuit processes video signals for a display device which includes a display panel including pixels each having a self light emitting element and a current limiting circuit limiting a current to the pixels. The processing circuit includes: a frame memory storing video signals of a previous frame; and a signal processer which: compares a luminance represented by a video signal of the current frame corresponding to a pixel and a luminance represented by a video signal of the previous frame corresponding to the pixel; outputs the video signal of the current frame in a case where the luminance represented by the video signal of the current frame is equal to or smaller than the luminance represented by the video signal of the previous frame or equal to or smaller than a predetermined threshold value; and outputs a weighted average of the video signal of the current frame and the video signal of the previous frame in any other case.
    Type: Application
    Filed: January 28, 2020
    Publication date: September 3, 2020
    Applicant: JOLED INC.
    Inventor: Toshiyuki KATO
  • Patent number: 10522088
    Abstract: A signal processing circuit includes an accumulator circuit that accumulates display history information regarding light-emitting devices, and a detection circuit that detects the degree of deterioration of a display panel by the accumulated display history information and detects a rotation-recommended state of the display panel on the basis of the degree of deterioration. In the case where the display panel is divided into a plurality of blocks each including the same number of pixel circuits, the detection circuit detects the degree of deterioration for each of the blocks, and if the number of the blocks whose degrees of deterioration are greater than or equal to a first threshold value determined in advance is greater than or equal to a predetermined number, detects that the display panel is in the rotation-recommended state.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: December 31, 2019
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Publication number: 20190035337
    Abstract: A display panel includes: a panel unit including a plurality of pixel circuits arranged in rows and columns; a source driving circuit that supplies, to the pixel circuits, a video image signal representing a video image displayed on the panel unit; a gate driving circuit that supplies, to the pixel circuits in a row-sequential manner, control signals each being a gate signal indicating a write timing of writing the video image signal; and a control terminal that receives a clear signal that serves as a refresh interruption signal. When the clear signal is received by the control terminal during the supply of the control signals, the gate driving circuit interrupts the supply of the control signals to the pixel circuits in a subsequent row.
    Type: Application
    Filed: June 15, 2018
    Publication date: January 31, 2019
    Applicant: JOLED INC.
    Inventor: Toshiyuki KATO
  • Publication number: 20190027097
    Abstract: A signal processing circuit includes an accumulator circuit that accumulates display history information regarding light-emitting devices, and a detection circuit that detects the degree of deterioration of a display panel by the accumulated display history information and detects a rotation-recommended state of the display panel on the basis of the degree of deterioration. In the case where the display panel is divided into a plurality of blocks each including the same number of pixel circuits, the detection circuit detects the degree of deterioration for each of the blocks, and if the number of the blocks whose degrees of deterioration are greater than or equal to a first threshold value determined in advance is greater than or equal to a predetermined number, detects that the display panel is in the rotation-recommended state.
    Type: Application
    Filed: June 15, 2018
    Publication date: January 24, 2019
    Applicant: JOLED INC.
    Inventor: Toshiyuki KATO
  • Patent number: 10140950
    Abstract: The present disclosure provides a display device driving method and the like that can suppress degradation of display quality at the time of switching to a video based on a video signal from an external signal source. The display device driving method according to the present disclosure includes: receiving a training signal transmitted from an external signal source; after receiving the training signal, transmitting a lock signal to the external signal source at a timing based on an internal synchronization signal of the display device; after transmitting the lock signal, receiving a video signal that is transmitted from the external signal source and is synchronous with an external synchronization signal; and displaying a video by using the video signal received from the external signal source.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: November 27, 2018
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 10121411
    Abstract: A display device includes pixel units, a source driver and a control unit. The source driver applies voltage corresponding to gray level values to data signal lines. Each of the pixel units includes a light-emitting element, a capacitance element and a driving transistor. The light-emitting element emits light according to a driving current. The capacitance element accumulates charge corresponding to a voltage at a connected data signal line. The driving transistor supplies the driving current corresponding to the accumulated charge to the light-emitting element. The control unit decreases voltage(s) to be outputted from the source driver, when an appearance frequency of display pixels having a low gray-level value is lower than a first reference frequency, or when an appearance frequency of display pixels having a high gray-level value is lower than a second reference frequency.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: November 6, 2018
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 9955786
    Abstract: In legged furniture having four or more legs and a load-receiving stage supported directly or indirectly by these legs, this legged furniture includes three main legs defining a triangular shape in a plurality of the legs and, assuming that the legged furniture is placed by using only the main legs, enabling a stable stationary attitude of the load-receiving stage, and a leg adjuster forming an extension portion of a sub leg other than the main legs and capable of expansion/contraction in a vertical direction and providing an expansion/contraction leg in cooperation with the sub leg and autonomously allows expansion or contraction of the expansion/contraction leg on the basis of a length of the main leg in accordance with the stationary attitude of the load-receiving stage.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: May 1, 2018
    Assignee: Shikumi Co., Ltd.
    Inventor: Toshiyuki Kato
  • Publication number: 20180048844
    Abstract: A video signal processing method includes: dividing a current frame which is to be processed into a plurality of blocks which are predetermined rectangular blocks; calculating, for each of the plurality of blocks divided into in the dividing, a feature quantity relating to luminance of pixels in the block; calculating first correction data, based on a feature quantity calculated from each of first blocks located above a first horizontal boundary in the current frame and a feature quantity calculated from each of one or more blocks located below a first horizontal boundary in a previous frame which has been processed immediately before the current frame; and correcting luminance of pixels in each of the first blocks in the current frame, based on the first correction data calculated in the calculating.
    Type: Application
    Filed: July 25, 2017
    Publication date: February 15, 2018
    Applicant: JOLED INC.
    Inventor: Toshiyuki KATO
  • Patent number: 9894313
    Abstract: A video signal processing method includes: dividing a current frame which is to be processed into a plurality of blocks which are predetermined rectangular blocks; calculating, for each of the plurality of blocks divided into in the dividing, a feature quantity relating to luminance of pixels in the block; calculating first correction data, based on a feature quantity calculated from each of first blocks located above a first horizontal boundary in the current frame and a feature quantity calculated from each of one or more blocks located below a first horizontal boundary in a previous frame which has been processed immediately before the current frame; and correcting luminance of pixels in each of the first blocks in the current frame, based on the first correction data calculated in the calculating.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: February 13, 2018
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 9773452
    Abstract: An EL display apparatus includes: gate driver ICs (i. e., gate driver circuits); a plurality of pixels; gate signal lines each transmit a selection voltage for selecting a pixel from the pixels and non-selection voltage for placing a pixel in a non-selection state; and TCON. The pixels each include: a driving transistor; an EL element; a first switching transistor; and a second switching transistor. The gate driver ICs each include scanning and outputting buffer circuits which are connected to TCON to which an output signal of each of the scanning and outputting buffer circuits is inputted.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: September 26, 2017
    Assignee: JOLED INC.
    Inventors: Masaru Nishimura, Toshiyuki Kato, Hirofumi Nakagawa
  • Publication number: 20170258228
    Abstract: In legged furniture having four or more legs and a load-receiving stage supported directly or indirectly by these legs, this legged furniture includes three main legs defining a triangular shape in a plurality of the legs and, assuming that the legged furniture is placed by using only the main legs, enabling a stable stationary attitude of the load-receiving stage, and a leg adjuster forming an extension portion of a sub leg other than the main legs and capable of expansion/contraction in a vertical direction and providing an expansion/contraction leg in cooperation with the sub leg and autonomously allows expansion or contraction of the expansion/contraction leg on the basis of a length of the main leg in accordance with the stationary attitude of the load-receiving stage.
    Type: Application
    Filed: June 9, 2016
    Publication date: September 14, 2017
    Applicant: SHIKUMI CO., LTD.
    Inventor: TOSHIYUKI KATO
  • Publication number: 20170132987
    Abstract: The present disclosure provides a display device driving method and the like that can suppress degradation of display quality at the time of switching to a video based on a video signal from an external signal source. The display device driving method according to the present disclosure includes: receiving a training signal transmitted from an external signal source; after receiving the training signal, transmitting a lock signal to the external signal source at a timing based on an internal synchronization signal of the display device; after transmitting the lock signal, receiving a video signal that is transmitted from the external signal source and is synchronous with an external synchronization signal; and displaying a video by using the video signal received from the external signal source.
    Type: Application
    Filed: November 10, 2016
    Publication date: May 11, 2017
    Applicants: JOLED INC., JAPAN DISPLAY INC.
    Inventor: Toshiyuki KATO
  • Patent number: 9595225
    Abstract: A display device includes a voltage drop amount calculating circuit that regulates a power source voltage, a power wire network in the organic EL display unit includes a row-wise resistance component Rah and a column-wise resistance component Rav, and the voltage drop amount calculating circuit divides the organic EL display unit into blocks each made up of pixels in Xv rows and Xh columns, and sets, for each of the blocks, a row-wise resistance component Rah? to a value obtained by multiplying the resistance component Rah by (Xh/Xv), and sets, for each of the blocks, a column-wise resistance component Rav? to a value obtained by multiplying the resistance component Rav by (Xv/Xh), thereby estimating a distribution, for the respective blocks, of amounts of voltage drop which occurs in the power wire, and regulates, based on the distribution, a voltage to be supplied to the display unit.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: March 14, 2017
    Assignee: JOLED INC.
    Inventors: Kouhei Ebisuno, Toshiyuki Kato, Shinya Ono
  • Patent number: 9576744
    Abstract: A solid electrolytic capacitor comprising a capacitor element including a positive electrode which contains tantalum as a principal component and is composed of a porous sintered body, a positive electrode lead which contains niobium as a principal component and has a first end part embedded in the positive electrode and a second end part extending from the positive electrode, a dielectric layer which is disposed on a surface of the positive electrode and a part of a surface of the positive electrode lead, and a negative electrode layer disposed on the dielectric layer; an positive electrode terminal electrically connected to the second end part of the positive electrode lead; a negative electrode terminal electrically connected to the negative electrode layer; and a resin outer body covering the surfaces of the capacitor element, a part of the positive electrode terminal and a part of the negative electrode terminal, wherein a linear expansion coefficient of the resin outer body is larger than all of linear
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: February 21, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Toshiyuki Kato
  • Patent number: 9524914
    Abstract: A method of manufacturing an organic EL display apparatus including an organic EL panel having light emitting pixels each of which has an organic EL element (OEL) includes: lighting up lighting target pixels set from among the light emitting pixels; causing an imaging device to photograph the organic EL panel and receiving a photographed image from the imaging device; detecting the lighting target pixels using the photographed image; determining whether an undetectable pixel that cannot be detected is included among the lighting target pixels, using a result obtained in the detecting; increasing an amount of luminescence of the undetectable pixel to a detectable amount of luminescence, when it is determined that the undetectable pixel is included; and aligning a relative position of the organic EL display apparatus and the imaging device, using the result obtained in the detecting.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: December 20, 2016
    Assignee: JOLED INC.
    Inventors: Miki Fukushima, Kazushi Sugiyama, Toshiyuki Kato, Yasunori Negoro